Is the Youtube algorithm directing people to make vaguely fascist feeling, "bring back the good old days", 'kids today', 'civilization is doomed' content aimed at young males? Or is that just a natural cycle that repeats throughout history?
The biggest film in history was "Birth of a Nation" until it was replaced by "Gone with the Wind", "Star Wars" may have been a rebellion against a vaguely Nazi empire, but it was still about hereditary rulers that are related to each other starting wars.
Overall, the trajectory seems fairly positive. The good old days were pretty crappy and that was reflected in their books, films and songs. Though I suppose if you're young enough that Mulan 1998 is a classic film from the good old days you might simply be ignorant of a lot of the crazy shit that went on.
Look up parents re-watching films from their youth with their children, to realise, horrified, what passed as entertainment in their youth that is now shocking to them and stuff they don't want their kids to emulate or look up to.